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Your cart is empty.EHEIM Jager heaters are fully submersible . With thermo-safety control. Rigid special laboratory glass. Precise temperature control. Heating function is indicated by an on/off control lamp. Simple and safe recalibration. Extra-long cable cord. Includes suction cup colder. Suitable for fresh and salt water. Precisely regulated, constant water temperature is very important for the comfort and success of your aquarium inhabitants. The Jager TruTemp adjustable heater is an ultra-modern electronic thermal device offering today's best technology. Designed for use in both freshwater and saltwater aquarium, Jager TruTemp fully-submersible heaters include these great features: Shatterproof glass construction - Made with laboratory-grade glass, TruTemp heaters are free of pollutants, resistant to chemical and biological substances, and able to withstand extreme temperature fluctuations. Their glass jackets also enlarge the heating surface and ensure even heat distribution. TruTemp Dial - Temperature can be precisely adjusted using the TruTemp dial with readjustment ring, the user can recalibrate the heater for a precise temperature reading. Control accuracy is +/- 0.5 Thermo Safety Control - This safety mechanism enables "running-dry" protection. The heater will shut off when removed from the water, and resume functioning upon return. On/Off Indicator Light - This convenient feature eliminates guessing and enables the user to verify heater function without getting their hands wet!Each Jager TruTemp Heater also includes a mounting bracket and suction cups for secure and flexible placement within your aquarium system. Extra Long Power Cord accomodates most applications. For aquariums up to 265 US Gallons.
Ted T.
Reviewed in the United States on April 6, 2025
Thermostat stuck over heating my Disscus tank close to 88 deg. Two months in use.
BWP
Reviewed in the United States on September 13, 2024
Working great to heat my 150 gallon at 81 degrees. I have this in a high-flow area of my sump (bottom left in the picture), and it works great. It’s a little hard to get in and out, because of the length (this thing really is long!), but it’s working great. Feels sturdy, buts its glass, so obviously be careful with it. I will probably buy another one for redundancy, but one is working fine so far. I have it plugged into an inkbird controller, and I have every confidence that this heater will work for quite some time to come.
Scott
Reviewed in the United States on July 29, 2024
When it comes to aquarium heaters, this is one of 2 brands I trust. This one, made in Germany and the other made in Italy. I have never had Jajer heater let me done. My only issue is that they are physically bigger than other heaters. They are built to last and they do.
Paul
Reviewed in the United States on November 30, 2024
These Eheim heaters are built tough and built to last too! I get 5 years service plus out of mine. I won't own any other brand, and neither should you.
jeff conley
Reviewed in the United States on October 25, 2024
It does a good job, works great, EZ setup.
keyriverguy
Reviewed in the United States on January 22, 2024
This is the one heater I can count on
eric vezina
Reviewed in the United States on December 14, 2023
Keeps good heat but it’s very long so it has to be angled in my 21 inch tall tank.
David
Reviewed in Canada on November 12, 2022
I ordered the 250 watt as a backup for my 180 gal (always have a second heater in my tanks). I received the 300watt for some reason but I’m not complaining, luckily the tank was tall enough.
Cris Caballero
Reviewed in Mexico on January 4, 2022
De los mejores del mercado sin duda, son costosos pero justifican su precio.
Blondie
Reviewed in the United States on January 15, 2021
You get what you pay for. This heater may cost a little more, but it's never fried my fish or let them freeze. Well worth the money. I've learned not to buy any other brand.
Julio Chavez
Reviewed in Mexico on April 30, 2021
Excelente calidad y regula muy bien la temperatura. Quizá la única queja es que es un poco grande
Frank rowe
Reviewed in Canada on June 14, 2020
I have had many jagger heaters one of the only brands I would trust in my reef tank. I hAd returned this one because I found my other ebo jaggers so I didn’t need 3 !
Mel
Reviewed in Canada on February 2, 2020
This is a great heater! I’ve had it for a year-ish and it has been going strong the whole time. Eheim is a very good brand for aquarium supplies and I will continue to purchase products from them.
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